Hand piece



FIG. 1 is a front top perspective view of the new design.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view of the new design; and,

FIG. 7 is a bottom plan view of the new design.

The features shown in broken lines depict environmental structure onlyand form no part of the claimed design.

CLAIM The ornamental design for a hand piece, as shown and described.